#include <unp.h>

int main(int argc, char *argv[])
{
    int sockfd, n;
    char 	recvline[MAXLINE + 1];
    struct 	sockaddr_in6	servaddr;

    if (argc != 2)
    {
	err_quit("usage: a.out <IPaddress>");
    }

    if ((sockfd = socket(AF_INET6, SOCK_STREAM, 0)) < 0)
    {
	err_quit("socket error");
    }

    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin6_family = AF_INET6;
    servaddr.sin6_port 	 = htons(13);
    if (inet_pton(AF_INET6, argv[1], &servaddr.sin6_addr) <= 0)
    {
	err_quit("inet_pton error for %s", argv[1]);
    }

    if (connect(sockfd, (SA *)&servaddr, sizeof(servaddr)) < 0)
    {
	err_sys("connect error");
    }

    while ((n = read(sockfd, recvline, MAXLINE)) > 0)
    {
	recvline[n] = 0;
	if (fputs(recvline, stdout) == EOF)
	{
	    err_sys("fputs error");
	}
    }

    if (n < 0)
    {
	err_sys("read error");
    }

    exit(0);
}
